Trolley-wheel.



B. GROW.

TROLLEY WHEEL.

APPLICATION FILED AUG. s, 190e.

%// lm la* Patented Aug. 3, 1909.

Qawlay. ',Eigfisa section online A .STATES BERT CROW, OF FINDLAY,OHIO.

TROLLEfYLWH'IEEL.

:Specification of Letters-Patent.

:Patented Aug. e, i909.

Application filed August 8, 1908. ,SeriaLNo 447,622.

To all 'whom t may concern:

Be it knownfthat I, -BnRrCnonga citizen vof the `.United lStates, :residing .at Findlay, mthecounty,` of Hancoek' and. State ofOliio,

have invented a inew and useful Trolley-` lVheel, of Which the .following is `a specification.

This inventionfrelates to trolley harps; and .whe-els.

The principal A object of the invention is to provide za;trolley Wheel having a detach- -ablerim which ean'be removed in the event .off :wear or breakage :and another 1one l substituted therefor. .It thus becomes possible to aforin the main ,portionpf the `wheel of -lnetal Asuch as iron :or steel fwhile the rim portion `only `can be formed A,o fvcopper or brass, pthus reducing the .cost of the wheel.

A further objectlisgto providea sectional avheel Vwhich `is -so mounted that the ;rin1 thereof can y.be -taken off .and anew one Secured in 4position vwithout 5 the .necessity of removingithenwheel from the harp.

4A further object yis to providey a bearing .forzthenvheel .which-can be readilytaken up in the event of wear, and which willkeep fthewheelftrue under all eonjditions, andthus .prevent dt from 4slipping on 1 the wire, which, as iis well known` causes a large Iproportion ofthe wear uponwheels now in use.

-NVith these and other objects in view, the invention consists .in certain novel `details of eonstruction and combinations of parts :hereinafter more fully described and l pointed 1 out in fthe claims.

In the accompanying drawings the pre- ;ferredgform o1 theinventionhasbeen shown.

"In said fdrawingsz-Figure 1 :is -=a side elevation ,of theitrolleyharpandWheel constituting the present invention,` a portionof Athe harp ;and .of the Wheel Sbeing `broken 1. Fig. '3 iswan ,innerelevation-ofthe `nim-'able member or hasp' of the troll-ey harp.

:Referring tothe figures by characters of reference, 1 designates `the .stein `of rthe i trolley harp, said stem' extending `-from I one Mend.A oftt-hefbody 2 of, said harp, there. being anffarni integnahwith and extendin from one-.side ,otthe bod-y,-said; army being ormed .with Ian elongated opening Y 4 at `fthe center x thereof. An enlargement. 5 ,f is ,fformedat the f-ree end ,of the arm and ,has ani opening 1- 6 55 f extendingtherethrough.

Ears ..7 f extend upwardly frointhe opposite .side .of the body 12 .and projecting between theseearsis oneendyS of la hasp 9, Vsimilar :in outline to the ,arm 3, and also provided witlnan elongatedopening 10. A. .pivot pin 11.eXtends transversely `:through the .ears 7 andthefadjoiningfportion 8.0i thehasps 9, Yso that itibecomespossible toswing thehasp relativetotheharp body 2. vAn enlargement 12 is lformed ,at ,the free ,Vend of the basp, u.said enlargement being provided with .an `opening .-13 arranged ,in the center .thereof and the zinner end :of which 4is yeountersunk las indicatedat 14. kNotehes or ,recesses 15 are formed `within the wallofthe ,counter- .sunkportion L4. Accontact strip or brush 16 is.s eeured^-tothe outer iface of the arinB andanother `similar brush issecuredto'the f outer .fase .of the .hasp 9. @he Ttwo brushes .extend through ftheppenings l and ,-10 respectively and zconverge .,upwardly, `the ter- ,ininals othebrushes being preferablydisnoseddn parallel .planesas indicated at 17.

.'Ighe ,wheel constituting thepresent invenftonfeonsists-of a cylindrical eore 18 having a passage 19 leiitending through the center thereof, thefends o fthelpassage being counterbored 4as indieatedat 20. A race 21 Vis formed -within the 4,inner .wallA of each counvterbore withinthe wheeland a. series of balls 22,. or. other .suitable anti-friction` devices, Iis -rnounted within the .race Each series Aor .ballsy surrounds 1a .icone ,28 and. one of these cones ."ornied upon. one ,aee oa disk 24 designedto fit lwithinone of the counter- ,.bores20- .Aiboss .loosely extends from fthe .other tace .of the f disk 24 and is ,fitted ,within the opening G hereinbefore ,referred 3to. Ang aXleQGf-eXtends through the cone ,23 and; bossjQ, .and is held against. displacement :by: a.- Cotter-pin 2T orA other deviceeXtending .diametrically through the Ienlargenient 5, -the1boss2-5, andthe agdey 26. The otherfcone 23 is `fornnid .npon `'the inner giace ofda disk 28, fittingdoosely within the otherl counterbore 2.0 inthe wheel, saiddiskbeing Eprolvided nponitsouter tace Vith-lacentral boss 29,.designed toncit withinf the conntersink 214. VAdoeking;pin or key Oisseated withiinthe idisklQSHand projects` therebeyond.l Close to .the boss .29, f2and1tl1isg key is designed to;fit,within .any.,oneofthenotches 15, and thus (prevent [the laessr29 .f and :fthe Y disks 28 :from rotating =,ndepenflently ,Offthefenlargement i12- .That

portion ofithe :axle 26.1 extending through the 11,10

boss 29 and the enlargement 12 is screwthreaded as indicated at 31, but is only engaged by the threads within the boss 29. The enlargement 12 can be swung off of the end of the axle by swinging the hasp 9 upon its pivot-pin 11. To prevent this movement of the hasp however, a counter-pin or similar securing device such as indicated at 32 is extended through the enlargement 12 and also through the end of the axle 26.

Ears 33 extend radially from the core 18 of the wheel, said ears being arranged in pairs and the pairs being spaced apart at regular intervals. A wheel rim 34 formed of copper, brass, or other preferred metal, surrounds the core 18 and the ears 33 thereon, and, extending inwardly from this rim are ears 35 designed to fit between the ears of each pair radiating from the core 18. The ears 33 and 35 are designed to be secured together by bolts 36 which extend transversely therethrough. These bolts also serve to retain in posit-ion the cap 37 of copper or other suitable conducting material, said cap being so shaped as to extend across the outer faces of the disks 24 and 28 and to lap, and bear snugly upon the outer faces of the ears 33.

It will be apparent that when the wheel herein described rotates within the harp the cap 37 will revolve therewith and between the ends 17 of brushes 16. Inasmuch as these brushes bear at all times upon the cap, it will be seen that they coperate therewith to conduct the current from the rim 34 to the body 2 of the harp. Should the rim 34 become worn or broken it can be readily removed from the wheel. This is done by first withdrawing the pin 32 from engagement with the enlargement 12 of hasp 9. The hasp is then swung outwardly upon its pivot 11 and off of the end of the axle 26. Bolts 36 are then disengaged from ears 33 and 35, after which the rim 34 is partly revolved relative to the core 18, so as to bring the ears 35 out of position between the ears 33. Rim 34 can then be removed laterally from the core of the wheel, and, by reversing the foregoing operation, a new rim can be secured in position. lVhen it is desired to take up wear within the bearings of the wheel the hasp is disengaged from the axle 26 by withdrawing pin 32 and swinging the hasp 9 laterally. The boss 29 and disk 28 are then rotated upon the threaded portion of the axle 26, and will cause the cone 23 carried thereby to move inwardly against the series of balls 22 contacting therewith. The bearing will thus be tightened and after the parts have been returned to their normal positions,A the key 30 carried by disk 28 will project into one of the notches 15 and be held so as to prevent rotation of the disk 28. It is of course to be understood that the other cone 23 is held against rotation at all times by the pin 27. By providing two series of anti-friction devices 22, the wheel is held true at all times. n

1t is to be understood of course that the rim 34 can be made of copper, brass, or other suitable conducting material, whereas the core of the wheel can be made of steel or other material different from that constituting the rim. nasmuch as the rim can be changed whenever worn, it will be seen that the life of the wheel is considerably prolonged.

Various changes in the size and proportions of the parts can of course be made without departing from the spirit or sacrificing the advantages of the invention.

lhat is claimed is 1. A trolley wheel comprising a core, laterally spaced radial ears thereon, a rim, inwardly extending ears integral therewith and movable annularly between the ears on the core, caps bearing upon opposite faces of the core and lapping the ears, and means extending through the caps and ears for detachably securing them together.

2. The combination with a trolley harp; of a wheel journaled therein and comprising a core, radial, laterally spaced ears upon the core, a rim, inwardly extending ears integral with the rim and shiftable into position between the laterally spaced ears of the core, caps snugly fitted upon the sides of the core and lapping the ears, means extending through the caps and ears for detachably securing them together, and brushes carried by the harp and bearing against the caps.

3. The combination with a trolley harp, comprising a body, an arm rigid therewith, and a hasp pivotally connected to the body; of a trolley wheel comprising a core mounted within the arm and detachably engaged by the hasp, a rim detachably secured upon the core, caps detachably secured to the sides of the core, and brushes secured to the arm and hasp respectively and bearing upon the adjacent caps.

4. The combination with a trolley harp comprising a body, an arm rigid therewith, and a hasp pivotally connected to the body; of a wheel supported by the arm and hasp, said hasp being mounted to swing into or out of engagement with the wheel, and an adjustable bearing within the wheel, said hasp having means for locking the bearing against adjustment.

5. The combination with a trolley harp comprising a body, an arm extending therefrom, and a hasp mounted to swing relative to the body; of a wheel supported by the arm and hasp and comprising a core, cones adjustable into opposite portions thereof, anti-friction devices within the core and bearing upon the cones, and a fixed axle extending through the cones, one of said cones being adjustable upon the said axle,

said hasp having means coperating With the Cone for locking said cone against adjustment.

6. The combination With a trolley harp comprising a body, an arm extending therefrom, and a hasp movable relative to the body; of a Wheel supported by the arm and hasp, said Wheel comprising a core, a fixed axle extending through the core, a relatively fixed cone upon the axle and projecting into the core, an adjust-able cone upon the axle and projecting into the opposite face of the Core, anti-friction devices Within the corel and bearing upon the cones, said hasp having means for securing the cone against adjustment, and means extending through the axle and engaging the arm and the hasp respectively for holding said axle against. movement relative to the arm and hasp.

In testimony that; I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of tvvo Witnesses.

' BERT CROV. Witnesses MARION G. FOSTER, T. D. BARNETT. 

